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Top 7 best gas suppliers in Belgium (2026)

The ranking of the cheapest natural gas suppliers in Belgium for a typical household (17,000 kWh/year, Wallonia reference). Annual cost, price per kWh, fixed fee and contract type.

Updated 1 July 2026

1
CheapestBest for nationwide gas at the best price≈ €1,614/yr
ENGIE — Basic Variable
Variable · 0.0464 €/kWh · 1-month commitmentNational (Wallonia · Flanders · Brussels)
Gas prices eased in July and ENGIE moves back ahead (~€1,614/year) while keeping national coverage — Brussels included — and a one-month commitment. A rare low price + dense service combination.
Pros
- Lowest annual cost recorded
- Available in all three regions
- One-month commitment
Cons
- Variable rate, revised monthly
- Dense tariff sheet, read carefully
View offerRecorded on 2026-07-01 · source
2
Best for the lowest kWh rate≈ €1,622/yr
OCTA+ — Flux
Variable · 0.0444 €/kWh · no commitmentWallonia · Flanders
The lowest kWh rate in the ranking (0.0444 €), only €8 a year behind the leader. Independent Belgian supplier, no commitment — but no residential offer in Brussels.
Pros
- Lowest kWh rate
- No commitment
- Independent Belgian supplier
Cons
- No Brussels residential coverage
- Fixed fee on the high side
View offerRecorded on 2026-07-01 · source
3
Best for a fully online experience≈ €1,666/yr
Ecofix — Flexy Online
Variable · 0.0501 €/kWh · fee €145.43/yrWallonia · Flanders
June's leader loses the top spot in July: its kWh rate (0.0501 €) is now beaten by ENGIE and OCTA+. Still a transparent, commitment-free, fully online plan.
Pros
- No commitment
- Fully online
- Transparent pricing
Cons
- High fixed fee (€145.43/yr)
- Loses the top spot this month
View offerRecorded on 2026-07-01 · source
4
Best fixed priceBest for locking your heating budget≈ €1,675/yr
Mega — Smart Fixed
Fixed 2 years · 0.0428 €/kWhWallonia · Flanders
The only fixed-price plan in the Top: 0.0428 €/kWh locked for two years. On a line as volatile as gas, paying ~€60/year more than ENGIE to remove spike risk is a defensible trade.
Pros
- Price locked for 2 years
- Lowest kWh rate in the panel
- Belgian supplier, bundles available
Cons
- High annual fee (~€278/yr)
- 2-year commitment
View offerRecorded on 2026-07-01 · source
5
Best for a natural gas + biogas mix≈ €1,723/yr
DATS 24 — Natural Gas Variable
Variable · 0.0518 €/kWh · fee €173.93/yrWallonia · Flanders
The Colruyt group plan includes a share of Belgian biogas. Annual cost is ~€110 above the leader: you pick it for the source, not for the price.
Pros
- Share of Belgian biogas
- No commitment
- Colruyt group, Belgian roots
Cons
- High fixed fee (€173.93/yr)
- ~€110/yr more than the leader
View offerRecorded on 2026-07-01 · source
6
Best for national coverage, Brussels included≈ €1,754/yr
TotalEnergies — Pixel Blue Variable
Variable · 0.0538 €/kWh · fee ~€170/yrNational
Available everywhere, Brussels included, with a broad range and structured service. But at 0.0538 €/kWh it costs ~€140/year more than ENGIE for equivalent coverage.
Pros
- Available in all three regions
- No commitment
- Broad product range
Cons
- High kWh rate
- ~€140/yr more than the leader
View offerRecorded on 2026-07-01 · source
7
Best for existing Eneco electricity customers≈ €1,838/yr
Eneco — Natural Gas Flex
Variable · 0.0570 €/kWh · fee ~€200/yrWallonia · Flanders
The most expensive in the ranking: 0.0570 €/kWh plus ~€200/year in fees, over €220/year above ENGIE. Only worth it to bundle gas with an existing Eneco electricity contract.
Pros
- No commitment
- Bundles with Eneco green electricity
Cons
- Most expensive in the ranking (+€220/yr)
- ~€200/yr fixed fee
View offerRecorded on 2026-07-01 · source

Comparison table

Supplier

Annual cost

Contract

Regions

1. ENGIE — Basic Variable

≈ €1,614/yr

Variable · 0.0464 €/kWh · 1-month commitment

National (Wallonia · Flanders · Brussels)

2. OCTA+ — Flux

≈ €1,622/yr

Variable · 0.0444 €/kWh · no commitment

Wallonia · Flanders

3. Ecofix — Flexy Online

≈ €1,666/yr

Variable · 0.0501 €/kWh · fee €145.43/yr

Wallonia · Flanders

4. Mega — Smart Fixed

≈ €1,675/yr

Fixed 2 years · 0.0428 €/kWh

Wallonia · Flanders

5. DATS 24 — Natural Gas Variable

≈ €1,723/yr

Variable · 0.0518 €/kWh · fee €173.93/yr

Wallonia · Flanders

6. TotalEnergies — Pixel Blue Variable

≈ €1,754/yr

Variable · 0.0538 €/kWh · fee ~€170/yr

National

7. Eneco — Natural Gas Flex

≈ €1,838/yr

Variable · 0.0570 €/kWh · fee ~€200/yr

Wallonia · Flanders

Ranking criteria

Total annual cost (17,000 kWh)Price per kWhAnnual fixed feeFixed or variableRegional coverage

Methodology : Ranked on total annual cost (price per kWh × 17,000 kWh + fixed fee) for a gas-heated household, recorded on 1 July 2026 in Wallonia. No sponsored offers, no affiliate links. Gas is more volatile than electricity: variable rates are revised monthly.

Sources : CREG — price comparison tools · CompaCWaPE (Wallonia) · CallMePower Belgium

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Frequently asked questions

Which gas supplier is cheapest in Belgium in 2026?

As recorded on 1 July 2026, ENGIE Basic Variable leads (~€1,614/year for 17,000 kWh, 0.0464 €/kWh), ahead of OCTA+ Flux (~€1,622/year). Gas is volatile, so this ranking can change month to month.

Fixed or variable gas price in 2026?

Variable is generally cheaper but exposes you to spikes. Mega Smart Fixed locks 0.0428 €/kWh for two years for ~€60/year more than the best variable offer — that is the price of the insurance.

Is the offer the same in Brussels?

No. The Brussels residential gas market is narrower: ENGIE, TotalEnergies, Luminus and Bolt are present, while OCTA+ or Ecofix only cover Wallonia and Flanders.

Should I take gas and electricity from the same supplier?

Not necessarily. Bundles simplify admin and sometimes give a discount, but the combined total from two different suppliers is often lower. Compare the total, not each energy in isolation.